prognathism
noun
                                                                                                                            
                                                            prog·na·thism
                    
                                                                                                              
                                                                                                                                  ˈpräg-nə-ˌthi-zəm  präg-ˈnā-
                                                                                                                                  präg-ˈnā-  
                                                      
                                                          
            
                                
              
          
                                                      : the condition marked by a prognathous jaw                                      
                
                    
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  Merriam-Webster unabridged




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